Masterpass MSK Paper 3 Flashcards
Bone infarct on bone scan
Diminished uptake acutely, increased later
Ossification of patellar ligament associated with
DISH
Ollier’s disease
Enchondromatosis, causes cartilaginous rests (round radiolucencies caused by displaced cartilage in bone)
Prostate cancer and bone pain, Ix
Radionucleotide whole ody scan
Hypertrophic osteoarthropathy caused by
Non-small cell lung Ca, or pulmonary mets
Haemochromatosis joint pathology
Chondrocalcinosis
Melorheostosis skin findings
Fibrosis of overlying skin
Pagets, insufficiency fractures
Fibrous dysplasia
Premature arthritis, calcification and loss of disc height
Ochronosis
Best Ix to exclude scaphoid fracture
MRI
Degenerative change of lateral surface of medial femoral condyle, adolescent
Osteochondritis dissecans
Buckle fracture aka
Torus fracture
Commonest fracture due to hyperextension injury (rear seat car crash)
L1
Commonest nerve injured in anterior shoulder dislocation
Axillary
Bony mass causing hyperglycaemia
Chondrosarcoma, then osteosarcoma
Well defined lytic lesion in sacrum, no sclerotic margin
Giant Cell Tumour
Commonest location for giant cell tumour
Epiphysis
5-year survival of metastatic osteosarcoma
10-20%
Well defined, expansile lesion in posterior spine
Osteoblastoma
Epiphyseal lesion with soap bubble appearance
Chondrosarcoma
Double density sign on bone scan
Osteoid osteoma
Fibrous dysplasia with intramuscular myxoma
Mazabraud’s syndrome
Commonest bone affected by Ewings’
Femur
Commonest part of bone affected by Ewings
Metaphyseal and diaphyseal
Commonest part of bone affected by Enchondroma
Metaphysis
Ix for sacrococcygeal teratoma
AFP
RCC mets appearance
Expansile, lytic lesion
Commonest location for spinal astrocytomas
Thoracic spine
Bowed PCL on MRI
ACL tear
Commonest location for enchondromas
Metacarpals
Cancer risk of haemochromatosis
Hepatoma
Best Ix to exclude occult stress fractue
Triple phase MDP bone scan
